Type-writing machine.



G. E. TOMLINSON.

TYPE WRITING MACHINE.

AYPLIGATIOH rum) SEFLZS, 190-1.

Patented Feb, 15,1910.

2 SHEETS-SHEET 1.

INVENTOR. -6IWJ-J ATTORNEY.

WITNESSES:

G. B. TOMLINSON.

TYPE WRITING MACHINE.

APPLICATIOK mum SEPT. 25, 1907.

Patented Feb. 15, 1910.

2 SHEETS-SHEET 2.

INVENTUH ATTORNEY UNITED STATEEAZJENT orrron.

CEARLES E. TGMLINSON. OF SYRACUSE, NEW YORK, ASSIGNOB. TO ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed September 25, 1907. Serial No. 894,502.

which the type bars are thrown to the print- 1 ing point with a motion the first art of which is comparatively slow and which 1110- tion is accelerated during the stroke of the .cey.

A still further object of the invention is to provide simple and ellicient means and by which the type bars are automatically locked against rebound when they return to normal position.

concerned, but as here shown said type bars are arranged ,in two sets comprising shorter type bars 6 and longer type bars 7, each carrying a single type S. The shorter tvpe bars are mounted on a grooved segment 9 and the longer type bars on a similar grooved segment 10 of greater radius than the other and a little nearer the front of the machine, the tvpe bars 6 alternating with the longer type hats 7. The segments 9 and 10 are circular in cross-section and have circumferential grooves 12, onejor each type bar, said grooves constituting race-ways for anti-friction balls 13 which bulls run in V-grooves in the heels of the type bars, said heels being formed as eyes which surround the s and the balls 13. The type bars w en in normal position rest against a pad 14 mount- ,ed along the forward portion and upper edge of a broad sub-lever segment 15 which is secured at its ends to the top plate 3 by screws or other suitable means.

Each of the type bars has projecting from To theahove and other ends which will the heel thereof u ward and toward the rear hereinafter appear my invention consists I of the machine :1 ug 16 to which is pivoted of the features of construction, arrangements of parts and conibinu iions of devices thenpper end of a link 17, the lower end of which is pivoted at 18 to a sub-lever or acdcscrihed in the following specification and tuating device 20. As hereinbefore pointed set forth in the appended claims.

out the type bars 6 and 7 alternate with each I the accompanying dr win Fi 1 3 other in the basket and the sub-levers 20 or is a front to rear vertical sectional view of all of the type bars are pivoted on a pivot as much of a front-strike typewritrng nuiwire 21 lying in a suitable slot in a flange or chine as is necessary to illustrate the application of my invention thereto. Fig. 2 IS a fragm ntary rear elevation showing a head on the under side and hour the rear edge or the segment 15. The segment 15 formed with a series of radial slots in number of the type actions. the top plate of l which the sub-levers are mounted and by i l l l l carriage (not shown) having mounted therei in a roller platen 4 diagrammatically shown in Fig. 1. The top plate'here shown com-' prises a dust guard 5 for the type bar pivots.

--The type bars may be mounted in any suitable manner, as far as my invention is which they are guided in their movements around the pivot wire 21. I plt'fcr to mount the pivot wire 21 some little distance in front of the type bur segments and to urrange the sub-levers substantially horizontal when they are in their normal positions will their rear ends in such positions that all of the links 17 incline toward the from of the machine. Each of the links 17 and. sub levers 5Z6 lies approximately in the plane of motion of the corresponding type bar as will be seen from an inspection of Fig. Each of said sub-levers formed with a slot :23 which slot as here shown is substantially straight. Each slot 23 receives a pin 24 mounted on the upper end of an upstanding arm 25 of a substantially rigid link. slide or actuating bar or device 26 which extends toward the front of the machine and at its forward end is pivoted at .27 to an arm 28 of the bell-crank key lever, the other arm 2t) 01 which is pivoted at 31 to the stem 32 of a printing key Within the scope of my mvention the forward ends of the bars 26 may be guided and connected with the keys in other ways than that shown. The ld-y stems 32 pass loosely through a keyboard plate 3%. The bell cranks 2t$-29 are pivoted on a series of transverse rods 35 which are arranged at ditl'erent elevations and are supported in any suitable manner in the frame work of the machine. The pins :Zl may be headed and shouldered rivets arranged to coact directly with the Stlb-lOYClS fit), or they may be such rivets with rollers mounted thereon to reduce wear and friction.

formed with two substantially horizontal arms 36 and 37 having parallel bearing portions 36 and 37 respectively. Zach of the arms 3? rests at its edge 37 in a groove in a roller 38 journaled on a rod 3) which is suitably supported in the base of the machine and each of the arms 36 is engaged along its upper edge 3t by a similar grooved roller (t) joarnaled on a frame rod ll similar to the rod 39. These frame rods 39 and t1 may he supported in any suitable manner and may if desired be provided with supports at intervals lengthwise thereof. but I have not thought it. necessary to show these details of construction. It preferred, a fixed guide pin 42 may be mounted by the side of each of the arms tear the sides of the system as shown in Fig. 2 to prevent lateral deflection thereof. T hese pins may be mounted in and may project horizontally from a suitable support 43. I

Each of the actuating bars 26 is adapted to move in a substantially straight line directly toward the front of the machine when a key is depressed, and each of the slots 23 normally stands at a very slight angle to the line of motion of the corresponding pin 24, and each of said slots is so disposed that if prolonged it. would pass comparatively close to, but would not pass through the center of rotation of the sub-lever. The construction is such that when a key is depressed the corresponding pin 24 moves toward the front of the machine, rocking the sub-lever 20 to the position shown in dotted lines in Fig. 1 and throwing the corresponding type bar to the printing point. Since at the beginning of the stroke the slot 23 is nearly parallel with the line of motion of the pin 4, the first part of the motion of said pin will impart a com aratively slow velocity to the sub-lever an type bar, but as this motion proceeds the slot turns to a greater and greater angle with the l ne of motion of the pin 24. Moreover, in its initial position said pin is, at a considerable Each 5 of the bars 26 is forked at its rear end, being 1 distance from the pivot of the sub-lever and moves with an accelerated velocity and the type bar partakcs of this acceleration. Moreover, when each type bar returns to normal position the line of motion of the pin :24 is so nearly at right angles to the slot- 23 that motion cannot be imparted from the type bar to the pin and the actuating bar which carries it, so that the type bar is locked against rebound from the pad 14.

In Fig. 1 I have shown two type actions, one for a long type bar and one for a short type bar, these type bars being situated near the middle of their respective segments. In Fig. 2 I have shown two type bars near the middle of the machine, two type bars at the extreme right hand endsof their respective segments, and two type bars in intermediate positions. It will be perceived that; not only the end type bars themselves butalso the corresponding sub-levers are at a greater elevation than those near the middle of the machine, the sub-levers being arranged in an arc of greater radius than that of either of the type bar segments so that the links 17 of each set of type bars may be made of uniform length. It will also be seen that planes of motion of the type bars, sub-levers and links at the end portions of the segments are inclined to the vertical and that the intermediate type bars and sub-levels and links occupy intermediate positions in these respects. In order to compensate for these diflerences in elevation and angle, the arms 25 are made progressively longer from the center to the sides of the system and said arms are bent at 44 so" as to bring their upper ends substantially into the planes of motion of the respective type bars. T he actuating bars 26 are so mounted that their pins 24, even in the cases of those actuating type actions near the sides of the system, move in approximately straight lines directly toward the front. of the machine. these pins 24 having substantially the same motion as those pins near the middle of the' machine. In other words, the bars 26 sliding in bearings at the rear ends thereof have a substantially parallel motion, that is to sa all parts of each of said bars, at least al of theparts near the rear ends of said bars, move substantially or approximately straight toward the front of the machine.

A type action comprising the substantially rigid actuating devices 26 having the upstanding arms 25 and mounted and guided for motion in a fore and aft direction after the general manner of those devices shown in the present case, are also shown in a companion application of mine tiled of even date herewith Serial No. 394,501 and in said companion application such type action is claimed more broadly than in the present application, the claims in the presentapplication being limited to features not shown in said application Sr. No. 394,501.

Various changes may be made in the details of construction and arrangement withom departing from my invention.

What- I claim as new and desire to secure by Letters Patent, is:-

1. In a flout strike t 'vpe\vriting machine, the combination of a front-strike type bar, a key actuated lever, a separate sub-lever, a link operatively connecting said sub-lever with ho type bar, and an actuating device mounted to slide fore-and-aft of the machinc, said actuating device being operated by said key actuated lever and operating said sub-lever.

2. In a front-strike typewriting machine, the combination of a front-strike type bar, a key actuated bell crank, a separate sublevcr operatively connected with the type bar, and an actuating device pivoted to said lzey actuated bell crank and operating said sub lever, said actuating device being mounted to slide fore and aft of the machine.

3. In a front strike typewriting machine,

the combination of 'an'upwardly and rearwardly striking ty bar, a key actuated lever, a separate suli-lever operatively connected wit 1 the type bar, and an actuating device intermediate said key actuated lever and sub-lever, said actuating device being mounted to slide in the machine and having approximately a. right-line movement fore and aft of the machine, the construction and arrangement of the parts being such that an accelerated movement is given the type bar in its movement to printing position and the type bar is locked against rebound in the normal position thereof.

4. In a front-strike typewriting machine, the combination of an upwardly and rearwardly striking type bar, a key actuated lover, a separate sub-lever operatively connected with the type bar and pivoted to swing approximately in the plane of motion of said type bar, and an actuating device intermediate said key actuated lever and sub-lever, said actuating device being mounted to slide in the machine and having approximately :1 right-line movement fore and aft of the machine, the construction and arrangement of the parts being such that an accelerated movement is given-the type bar in its movement to printing position and the type bar is locked against rebound in the normal position thereof.

In a front-strike typewriting machine, the combination of a pivoted front-strike type bar, a sub-lever connected with said type bar and 'ivotcd to swin ap roximat-fly in the p one of motion 0 sai type bar, a key, and connections between said key and said sub-lever comprising an endivise movable member, said member moving fore-and-aft of the machine and having direct sliding connection with said sub-lever.

(3. In a typcwriting machine, the combine: tion of a pivoted type bar, a sub lever connected with said type bar, a key, and connections between said key and said sub-lever comprising an actuating bar or device hav-. ing direct sliding connection with said sublover, a key actuated lever to which one end of said bar or device is pivoted and by which said device is operated, and means sepa rate from said sub-lever for guiding the other end of said bar or device. so

7. In a front-strike typewriting machine, the combination of a front-strike type bar, a sub-lever connected with said t pe bar and pivoted to swing approximately in the plane of motion of said type bar, and connections 35 between said key and sub-lever includin a )ivotcd device actuated by said key, and a or or actuatin device pivoted at its forward end to said pivoted device and slidably mounted at its rear end. 99

8. In a front-strike typewriting machine, the combination of a series of front-strike type bars, a series of sub-levers connected with said type bars and each pivoted to a relativl fixed part to swing approximately in the p ane of motion of the corresponding type bar, a series of keys, key levers at the front of the machine, and connections between said key levers and said sub-levers comprising a series of rigid bars or actuating 100 devices shdably mounted at their rear ends for motion in a fore and aft direction.

9. In a front-strike typewritin machine, the combination of a. series of rout-strike type bars, a series of sub-levers connected with said type bars and each pivoted to a relatively fixed part to swingapproximately in the plane of motion of the corresponding type bar, a series of keys, key levers at the front of the machine, and connections bev tween said key levers and said sub-levers comprising a series of rigid bars or actuating devices slidably mounted at their rear ends for motion in a fore and aft direction and each having an upstanding arm fpr operating a sub-lever.

10. In a front-strike iypewriting machine, the combination of a series of front-strike type bais, a series of links ivoted to the heels of said type bars and hung behind said 120 type bars, a series of sub-levers connected with said links, a series of keys, and connections bet-ween said keys and sub-levers comprising a series of actuating bars having a pin and slotconnection with suit sublever, and means for-guiding said actuating bars for motion in a fore and aft direction.

11. In a front-strike typewriting machine. the combination of scgnientally dis osed front-strike type bars, a series of ra ially i i t i arranged links pivoted to the heels of said type bars and lying behind said type bars. a series of sub-levers pivoted forward of said rear ends with said links. a series of keys. and connections between said keys and subleveis comprising a. series of actuating bars having a pin and slot connection with said sub-lever. and means forguiding said actuating bars for motion in a fore and aft direction.

12. In a front-strike typewriting machine, the combination of a series of front-strike type bars. a series of sub-levers each connected with a type bar. each of said sublevers lying approximately horizontal and having straight slots therein, a series of keys, and connections between said keys and sub-levers comprising a device having a pin working in said slot and guided for motion substantially in a straight line.

13. In a front-strike typcwriting machine, the combination of a se es of front-strike type bars, a series of sub-levers each eonnectcd with a type bar and pivoted at its forward end to swing approximately in the lane of motion of the corresponding type T at and each of said sub-levers lying ap proximately horizontal and having straight slots therein. a series of keys, and connections between said keys and sub-leverscomprising a device having a pin working in said slot and guided for motion substantially in a straight line.

14. In a front-strike typewriting machine. the combination of a series of front-strike type bars arranged in two segmental sets, one of less radius than the other. links pivoted to the heels of said type bars and extending therefrom in radial planes. and a series of sub-levers pivoted to swing approximately in the planes of the corresponding type bars, each of said sub-levers being ivoted atone end on a fixed pivot and at its rear end to one of said links. a series of keys. and connections between said keys and sub-levers comprising a series of bars mounled for :i bodily motion in a fore and aft direction and having a pin and slot connection with said sub-lever.

15. iii a front-strike typewriting machine. the combination of a series of l'roubstrikc typo bars arranged in two segmental sets. one of less radius than the other. links piva series of bats mounted for a bodily motion. in a fore and aft direction and having a pin and slot connection with said sub-lever. series of type bars and connected at their 1 16. In a front-strike typewriting machine, the combination of a series of front-strike type bars arranged in two segmental sets, one of lt radius than the other, links pivoted to the heels of said type bars and extending therefrom in radial planes, and a series of sub-levers pivoted to swing apiiig ty'ie bars and links, each of said sublevers iieing pivoted to one of said links, a series of keys. and connections between said keys and sub-levers. comprising a series of bars mounted for motion in a fore and aft; direction and having a pin and slot connection with said sub-lever. the construction and arrangement being such that each of said pins imparts to the corresponding siib-lever a motion that is relatively slow in the first part of the stroke and that is accelerated during thest roke.

1?. in a front-strike typewriting machine, the combination of 1 series of front-strike type bars arranged in two segmental sets, ono of less radius than the other, links pivi oted to the heels of said type bars and extending therefrom in radial planes, a Sublever segment mounted in iront ot the pivots of said type bars. and a series of sub-levers sponding type bars and links. each of said sub-levers being pivoted at its forward end to said segment and at its. rear end to one of said links. a series of keys. and connectiui s between said keys and sub-levers comprising a series of barsmounted for motion in a fore and aft uirection and ha ring a pin and slot connection with aid sub-lever, the construction and :1 'raugen'icnt being such that each of said pins imparts to the corresponding sub-lever a,niotio:i that is relatively slow in the lil' t part of the stroke and that is accelerated during the stroke.

18. In a front-strike typewriting machine,

, the combination of a serie of front-strike type bars arranged in two segmental sets,

oted to the heels of said type bars and extending therefrom in radial planes. a sublever segment mounted in front of the pivots of said type bars. and a series of sub-levers pivoted in said sub-lever segment to swing approximately sponding type bars. each of said ub-levers being pivoted at its forward end to said segment and at its rear end to one of said links, a series of keys. and connections beill the planes of the corn.

oted to the heels of said type liars and extending therefrom in radial planes, a sublevcr segment mounted in front of the pivots of said type bars. and a series of sulrlevers pivoted in said sub-lever segment to swing,

approximately in the planes of the corresponding type. bars. each of aid siilrlcvers being pivoted at its forward end to said segment and at its rear end to one of said links. a crics ol' keys. and connectioin between said keys and sub-levers comprising a series of bars mounted for motion in a fine and aft direction and havin; pin and slot connection with said sob-lever, the relation tween said keys and sub-levers comprising i of the parts being such that when a type bar proximately in the planes of the correspondis in normal position said actuating devices are capable of actuating said sub-lever but said sub-lever is incapable of actuating said -upwardly and rearward y striking bars,

actuating devices, whereby the type bars are locked against rebound when they return to normal position.

19. In a front-strike typewriting machine, the combination of a series of fronttrike type bars, a series of keys, and connections between said keys and type bars comprising a series of actuating devices operatively connected at their forward ends with the keys and having at their rear ends up r arms 36 and lower arms 37, grooved rollers mounted above said upper arms 36 and guiding the same, and grooved rollers mounted beneath said lower arms 37 and guiding the same.

20. In a typewriting machine, the combination of segmentally arranged type has, sub-levers mounted in an arc, radially disposed links connecting said ty bars and sub-levers, and key operated sli ding actusting devices co-acting directly with said subevers.

21. In a front-strike typewriting machine, the combination of segmentally arranged upwardly and rearwardly striking ty e bars, sub-levers mounted in an arc, radia ly disposed links connecting said type bars and subdevers, said links moving in approximately the same planes that the type bars swing in, and key operated sliding actuating evices which move approximately in straight lines fore and aft of the machine and co-act directly with said sub-levers.

22. In a typewriting machine, the combination of segmentally arranged type bars, sub-levers mounted in an arc, radially disposed links connecting said t pe bars and sub-levers, and key operated s idiug actuating devices co -acting directly with said sublevers, said actuating devices having progressi'vely longer arms from the center to the sides of the system.

23. In a front strike typewriting machine the combination of se entally arranged sub'levers mounted in an arc, radia disposed links connect-ing said type bars and sub-levers, said links moving in approxi mately the same planes that the type bars swing in, and keyl operated sliding actuating evices whic move approximately in straight lines fore and aft of the machine and co-act directly with said sub-levers, said actuating devices having progressively longer arms from the center to the sides of the system.

24. In a typewriting machine, the combination of segmentally arranged type bars, sub-levers mounted in an arc, radially disposed links connecting said type bars and sub-levers, and key operated sliding actuating devices co-acting directly with said sublevers, said actuating devices having arms which coii )erate with said sub-levers ,and which are at at progressively greater-angles from the center to the sides of the system. 7

25. In a typcwriting machine, the combination of segmentally arranged type bars, sublevers mounted in an arc, radially disposed links connecting said ty e bars and sub-levers, andkey operated s idingactuating de vices co-acting directly with said sub-levers, sa d actuating devices having arms which cooperate with said sub-levers. and which extend to progressively greater distances from the actuating devices and are bent at progressively greater angles from the center to the sides of the system, so as to bring the ends of the arms which are connected with the sub-levers ap roximately in the same planes as the subevers.

26. In a front-strike typewriting machine,

the combination of segmentaily arranged upwardly and rearwardly striking t bars, sub-levers mounted in an arc, radia y disposed links connecting said type bars and sub-levers, said links moving in approximately the same planes that the type bars swing in, and ke operated sliding actuating evices whi move approximately in straight lines fore and aft of the machine and co-act directly with said sub-levers, said actuating devices havin arms that extend upwardly to progressive y higher elevations from the center to the sides of thevsystem and cotiperate with said sub levers.

27. In a front-strike typewriting machine, the combination of segmentally arranged upwardly and rearwardly striking type bars, sub-levers mounted in an arc, radial y disposed links connecting'said type bars and sublevers, said links moving in approximately swin in, and key operated sliding actuating evices which move approximately in straight lines fore and aft of'thc machine and co-act directly with said sub levers, said actuating devices having arms which extend upwardly to progressively higher elevations and which are bent at progressively greater angles from the center to the sides of the system to bring the upper ends of said arms approximately in the same planes as the sub-levers to which they are connected.

Signed at Syracuse, in the county of Onondaga, 16 day of Sep. A. D. 1907.

CHARLES E. TOMLINSON.

Witnesses:

C. G. Scnoumacx, J. A. Press.

the same planes that the type bars and State of New York, this 

